#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ double a; int b; cin>>a; b=a; if(a!=b){ cout<<b+1<<endl; } else{ cout<<b<<endl; } return 0; }